You should replace the spark plugs in your Dodge Caliber at about 60,000 miles. The spark plug electrode wears over time due to a high amount of voltage arcing across the spark plug which causes the tip of the plug to erode. The high pressure and temperature that can be found in the engine cylinders puts a lot of strain on the spark plugs. Replacing the spark plugs may bring back some lost performance and may even boost your fuel mileage.

1

Open the Caliber's hood and prop it up.

2

Remove one coil at a time to access the spark plugs. The Dodge Caliber uses a coil-over-plug ignition system instead of a distributor. Each coil is held on by two bolts that can be removed with a ratchet. Turn in a counterclockwise direction and then pull the coil out once the bolts are removed.

3

Remove the spark plug with a ratchet. Attach a long extension and spark plug socket to the ratchet and turn counterclockwise.

4

Install the new spark plug in the cylinder and tighten using a normal socket (13/16 inch). A normal socket is necessary because a spark plug socket will grab onto the spark plug and get stuck in the cylinder.

5

Reinstall the coil on the spark plug and tighten the bolts with a ratchet.

6

Repeat Steps 2-5 for each plug, and then close the hood.

Tip

Placing anti-seize compound onto the threads of the spark plug will make it easier to remove the spark plugs the next time you change them.

Warning

Prevent injury. Wear safety goggles when working on your vehicle.

Items you will need

References

About the Author

Shayrgo Barazi is a college graduate with a degree in automotive engineering technology (B.S.c.) from Ferris State University. He is a successful writer and has taken a college level technical writing course. He currently works for Time Wave Media writing automotive DIY articles. He has an intuition for technology and has the capacity to write, too.